#!/bin/sh
# PCP QA Test No. 1178
# Exercise the BCC PMDA tcpperpid module - install, remove and values.
#
# Copyright (c) 2018 Red Hat.
#

seq=`basename $0`
echo "QA output created by $seq"

. ./common.bcc

_pmdabcc_check
which curl >/dev/null 2>&1 || _notrun "No curl binary installed"
[ "$(pmpython src/bcc_version_check.python)" = "0.6.1" ] \
  && _notrun "Broken BCC version detected"
case "`uname -srm`"
in
    Linux\ 5.2.*)
    		_notrun "Bad Linux 5.2 kernel headers will cause BPF to fail"
		;;
esac

if [ -f /etc/lsb-release ]
then
    . /etc/lsb-release
    if [ "$DISTRIB_ID" = Ubuntu ]
    then
	# This test fails for Ubuntu 19.10 because the linux headers used
	# by the BPF compiler appear to be knackered.
	#
	case "$DISTRIB_RELEASE"
	in
	    19.10)
		_notrun "bcc does not work for this test on Ubuntu $DISTRIB_RELEASE"
		;;
	esac
    fi
fi

if [ -f /etc/os-release ]
then
    . /etc/os-release
    if [ "$NAME" = "openSUSE Leap" ]
    then
	# This test fails for openSUSE 15.1 because the linux headers used
	# by the BPF compiler appear to be knackered.
	#
	case "$VERSION"
	in
	    15.1)
		_notrun "bcc does not work for this test on openSUSE $VERSION"
		;;
	esac
    fi
fi

target_ip=1.1.1.1

status=1       # failure is the default!
signal=$PCP_BINADM_DIR/pmsignal
$sudo rm -rf $tmp.* $seq.full

_install_filter()
{
    sed \
    -e "s/Using BPF source file .\+/Using BPF source file X/g" \
    #end
}

_prepare_pmda bcc
trap "_pmdabcc_cleanup; exit \$status" 0 1 2 3 15
_stop_auto_restart pmcd

cat <<EOF | _pmdabcc_install | _install_filter
# Installed by PCP QA test $seq on `date`
[pmda]
modules = tcpperpid
prefix = bcc.
[tcpperpid]
module = tcpperpid
cluster = 11
dport = 80
EOF

_pmdabcc_wait_for_metric

# Generate system activity for the BCC tcpperpid module
curl -s http://${target_ip} > /dev/null &
curlpid=$!

pmsleep 3

echo "=== report metric values ==="
pminfo -dfmtT bcc.proc.io.net.total.rx 2>&1 | grep $curl_pid\" | tee -a $here/$seq.full \
| _value_filter_nonzero >$tmp.1
if grep OK <$tmp.1 >/dev/null
then
    cat $tmp.1
else
    # Twice as the old kprobe based BPF seems to provide
    # results occasionally with some delay.
    # Safe to remove when no kernel < 4.16 / bcc < 0.6 in use anywhere
    pmsleep 2
    pminfo -dfmtT bcc.proc.io.net.total.rx 2>&1 | grep $curl_pid\" | tee -a $here/$seq.full \
    | _value_filter_nonzero >$tmp.2
    if grep OK <$tmp.2 >/dev/null
    then
	cat $tmp.2
    else
	cat $tmp.1
	cat $tmp.2
    fi
fi

_pmdabcc_remove

status=0
exit
